HEAT TRANSFER

DEFINITION ON HEAT

• Not a thing
• A process of energy transfer
• Transfer energy from one object (hotter w/ more energy)
• to another (colder).

DEFINITION OF HEAT TRANSFER

• Always move from hot to cold
• Moves in 3 ways - convection, conduction, & radiation.

3 Methods Of Heat Transfer

• Convection- trans. of heat through fluids (gases&liquids)
• Conduction- transfer of heat through touching objects.
• Radiation- transfer of heat through waves or rays.

CONVECTION

• Ex. An iron-fluids & gases from the iron producing steam.
• Ex. Boiling water - heat moves through H2O creating
• convection currents.

CONDUCTION

• Ex. Fish in a pan-heat from the pan cooks the
• pancakes through touch.
• Ex. A burger on a grill- the heat & fluid gases from
• the grill heats up the burgers through touch.

RADIATION

• Ex. Radiator- waves from the radiator heats the house
• Ex. Microwave- rays from the microwave transfer heat
• from it to the food.

Does the heat transfer method require movement of matter?

Does the method require matter at all? Yes it uses all matter.